[ccp4bb] Polarizing filter

[Terje Dokland]

We are looking to buy a polarizing filter for our Leica  
stereomicroscope that we use to observe crystals. However, I am a  
little confused about the types of filters  that are available from  
photography stores; specifically there are "linear" and "circular"  
polarizers. I would guess that what I need is a linear polarizing  
filter that can rotate, though these are harder to find than the  
circular polarizers that seem to be more common for general  
photography. Any advice? Thanks,
Terje


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Terje Dokland, PhD
Associate Professor
Department of Microbiology
University of Alabama at Birmingham
845 19th St South, BBRB 311
Birmingham, AL 35294
Tel:    (205) 996 4502
Fax:    (205) 996 2667

Do. Or do not. There is no try.   -- Master Yoda